#pragma once
#include <memory>
#include <functional>

class Buffer;
class TcpConnection;
class Timestamp;

using TcpConnectionPtr = std::shared_ptr<TcpConnection>;
using ConnectionCallback = std::function<void(const TcpConnectionPtr&)>;
using CloseCallback =std::function<void(const TcpConnectionPtr&)>;
using WriteCompleteCallback = std::function<void(const TcpConnectionPtr&)>;
using MessageCallback = std::function<void(const TcpConnectionPtr&, 
                                            Buffer*, 
                                            Timestamp)>;
using HighWaterMarkCallback = std::function<void(const TcpConnectionPtr&, size_t)>;                                    